Compartment tube grinding mill



Jan. 6, 1931. I J, v, DURNlN 1,787,897

COIIPARTMENT TUBE GRINDING MILL Filed Aug. 1s. 1929 :s sheets-sheet 2 gwwnto/o dumm,

J. V. DURNIN` COMPARTMENT TUBE GRINDING MILL Filed Aug. 13, 192.9 5 Sheets-sheet 5 Jan. 6, 1931.

y4 5 plurality otsegmeiitg, one or 2111 of which iitlieldrawinge,Whereiii for the purpose k90V f` .TosliPH Vf-D-Uigulu, ioF ALLENTOWN,EimSYLvANA i COMPARTE/mum TUBE GRINDIG fiviIvLli` `Applicaupn meri August ie-19559. semaine. 385,529. My iiivezitiouijelates to improvements' inY maybe aldjustedto controlthe/Volumeof niacoiiipartmeiit tube grinding ii'iills'. y n teria-i passing 'through the l?.-,.1"ift `),11.- vThis n The eloeiieyof any,tube'grindiug mill, offeuuibi' found mutei 'al toiL S5 i171 progiefr the Single ormultifeompurtmerit type, operone` Coi/ 11 'nient toltlifefothei", Y .atiiiguponcen'ie'iit dikkere orotheimat d t ally disch it-o the Screen. `.5.0 i is determiiedby'the,toiuiev'eof fine puitiolee Toeffeott udjustm "f ltioiis, it ground.perfkilowett of power input. The V neoesssu'ryyto'sto the'rotating tube or reduction of the materiel @from the l izo g I '21s the odjusting elements 1extend to to therequireol rieiiessisooutroiled by tour the eig erior the tubes.' After adjustment, 1u @wml-53mg@ the.' SpeerdA 0f ,rotation vthe .the eieinejnts are locked in the adjusted V-posi- 55 'grinding vmill with relatioii to 'it` diameter, Tlieopeiiiiigg or". the vsexieral,partitions .for prbducngthe required. Cascading action my be .eww-@i661 with, lfSiJeC 150 he'rope'fiof thegriidiigmediu';SecoiicLtiie u'feight of lugs 1 11` the other' partitions, permitting oit the; grinding media, thirchthe length of the Illalljl' O .page fifonione compartiment tothe 1j ooiiiportment; fourtlutlie size'of'the open- Other ulgfladuuted sizeg; K' G0 Aor holes in the'` partition controlling. the The'oonstijuetiou of tliepai-titioii is strong discharge of the iiuteril from toe comp E tand durlbllld iS OTLDG in Segments which ment In'view off thesel factors, it will be4 Seen that meut be easilywacoompliehed.

2o itis 'eggentialto @ciengy to keep the cgmggft l inthe accompouyiiig drziwings, forming u 65 Minka. Ol. other material in the "ng purtt'his specification, and in which like eliamber or compriftmeritl i917 i Suf-@ it .minierals are employed Vto designate like parte ieigth of time, until it is groun'dfto the delthroughout the same, aired fiilieifiess, und i theo to disoharrge `the Figure lis u Side elevutioiofa grinding 5 'ground r4riiateriul from *the* chamber 'or cougi- Cubo mill @Iubo/dying my invention, 70

pertinent, Sothut tlieunground material ligure 21.511 transverse Section taken on be more readily acted by. the; grinding 'lili-e 2 2 of Figure 5f, media, l En praetice,it has been` observed .that Figure 3 'iskzijside eleyatioii of two of the the grindabiiity of fthe materiel V ofteii Spider -seglllellf fl Y 21) ohaugegdue tothe foot that the raw material Fzbule un end elevzitim` of'one Vspider 745 is Securodfiomu quarry oro, mine sind the segment, f ohe'mioa'l'joriphyeioel Aprime/iti es `of the ifa-W Figure isjka. central Ver-tieni'longitudinal umtorin] @buiige from time 'to4 time.V This eezrtiou through 'oiie of the partitions, y

rhaiige iu'die properties oit thou/iw umtorifil figliroy isI :rdetuiied ti'ziiisverse section .'J Wiiiithrow out oi :idjustliueiit ziuv yg,imliiigV u on line 5 6 of Figure '9, t 8U tube Voili which has. been Caiibrfir or grati? ure 'Y 'is a plan `View of one of the pioted uated. so es to producethe'ii'iexiiuuiii giiiidshut-ters, i

.may be Seperate, Wherebyrepiror repleteing' eioieiicv upon given materiel.. n .iguie `8 .is a side .elevaiiou of the salme,` The pr ,uit invention pioyuies in august- Y f Figure 9 is L tizinsvereSection taken ou 4u bie pai ition, by means oi" Wiuchrthe uio- 11ne`99 oi Figure 5, g5

'inding' oham- ',igure l0 is :r detailed illunsferse section .one VEhe adtel'en `on line' 10ft-.'10 of Figure 5,.

Figure ll 1s a pepectiie'VeW of ai lool;

terizil rkiy be retained in the g; ber for the required length oi. l ,jutmeut of the vdevioeis highly'fiexible viuays much the rea of the partition eiibodies it .bloekl Ynates the casingor tube of the mill, which isY of illustration, is shoiv'n a preferredy ci'iibodiment of my invention, the numeral l desigpreferably horizontally arranged, and Apro,- vided upon .its exterior withk rings l5', engaging supporting and driving means 16,3 whereby the casing is rotated upon its longitudinal axis. The Vcasing is provided, at its rear end ivitlianinlet opening 17, for receiv- `ving the rock to be ground andis providedV Y at its forward end with an outlet openinglS,

discharginginto a screen l9.` Disposed Within the Vcasing l5 inspaced relation, are adjustable partitions 20, affording compartments A, B and C: jThese adj ustableparti-y tions are identical, and a detailed of one Will suffice for alla#v 'f IThe compartments contain grinding balls,

to act upon the clinkerrs-'to be ground, and thecasing 15 has its inner surface covered by va lining 2l, formed of metalor the, like,

to'protectthe casing. This lining terminates atthe ends of the compartments, and isspaced to provide an annular recess 22,V Figure 5,

for receiving Vthe elements of the-partition.

Each partition lembodiesV a spider 23, in-

cluding spidersegments 24.` Each spider segment includes a solid curved rim segment 25, connected at its ends Witliradial arms V26 preferablyintegral therewitln These radial arms are integral with a tapered hub segment 27.VV 'The arms 26' are provided 'with radial flanges 28, extending inwardly and laterally beyond 'the arms 26,V The-arms 26l of the adjacent spider segments, Figures -3 and 6, are connected by vbolts 28T. The assembled hub segments provide a. tapered or conical hub having a ceiitralopeiiing 29. The rim seg-V 'inents 25 fit Within the annular recess 22, as

shown. Disp'osedupon the forward Vside of the spider segments are segmental discharge plates 30, engaging the rim segments 25 and flanges '28, and segmental inlet plates y3l, are

arranged upon the opposite or rear side of the spider segments and engage with the rim segments and flanges 28.A rl`liediscliarge and ameter forwardly, and the inner ends of the' segmental inlet plates Stare spaced from this conical hub,.afl'ording an annular pas? sage 35, through which the ground rock discharges into the next forwardY compartment. The purpose of the inletplates 3l is toprotect the interior ofthe partition and the elements housed therein'from the action of the ,Y Lgrinding balls and rock, and permitting of fthe proper discharge of the ground material compartment. ments and their hubs are concentric With the Vcasing l5.

description with slots 40 and 4l respectively.

from `one `coinpartmentto the next forward The assembled. spiderY segrlhe hub segment 27 of each spider segment is provided upon'its rear or large end Witlia recess 86, having an opening formed therein 'for receiving a pivot element or screw 37,

and the rim segment 25 Vis provided with a curved recess 38, Figures Sand 5,aiid this recess 'is concentric with the pivot element 37. A shutter-plate or element Vv39is mounted Within each recess -38 and' is'di'sposed at the rear of and in contact with the segmental `discharge plate A3 0, and Ais pivotallyv mounted upon the pivotelement 37, at its inner end. Thelshutterlplateis, therefore, capable of partaking of swinging movements With rela-v tion to the segmental discharge plate vEach segmental discharge plate,F -igure 9, isprovided with an outer curved group of radial slots or openings 40 and 41, and an intermediatev curved grouprof radial slots or open- 'ings 42, which are staggered with relation to "the'openings or slots 40 and 41. Invvardly of the slot-s 42, the segmental discharge plate is provided With a. plurality7 of groups. of circumferentially ext-ending slots 43, Each coacting shutter-plate 39 is provided with 'an outer curved group of slots or openings 44 and 45, adapted forv movement into and out of registration respectively with the slots 40 and 41. The shutter-plate is provided with an intermediate curvedv groupV of slots or openings 46, 'disposed in staggered relation to theV slots 44 and 45 and'being twice as Wide as these slots. Slots 46 are adapted for movement into and out of registration With slots 42. Circumferentially extending slots 47 are formed in the inner end of the segmental shutter-plate and are adapted for permanent registration With the slots 43. When slots 44 yand 45 are in Aregistration with slots 40 and 4l respectively, slots 46 Will register With slots 42.

` When the shutter-plate is turned sufficient# ly so that slots 44 and 45 are Vjust out of registration with slots 40 and 4l respectively, slots i 46, due to their increased Width Will still reg ister with slots 42. A further turning move- 44 and 45 will still remain out of registration n The cir# cuinferential slots 47 remain in permanent registration ivith slots 43.

Separate meansare provided to turn each segmental shuttenplate 39, comprising a rack 48 secured uponthe inner side of the shutterplate 39, near its outer end, and preferably formed integral therewith. This rack is engagedby a pinion 49, rigidly mounted upon a `radial shaft 50, extending through an opening 51,:formed in the rim segment 25. The shaft 50 also extends through an opening in plates disposed upon one sidezpf thespiderand corresponding in number and arrangement to the spider segments and having openings formed t ie-rein, a plurality ot seg-1 Vmental inlet rplates disposed upon Vthe opposite side et the spiderand correspondu'ig in l number and arrangement .to thespider seginents,`said inlet plates having their. inner ends spaced Jfrom the reduced end'ot the .c'oni-, cal hub for providing a central opening. for the passage ot material, means to secure the discharge plates and the inlet plates'tothe correspon-ding spider segments, aplurality of segmental cover plates disposed within the spider segments and correspondingin*number and arrangement to the discharge plates and having openings adapted -or registration with the first named openings, means to pivot the inner ends of the cover plates with. `the hub segments, and adjustable means en- Yga'gingA the outer endsof tliecoveri-platcs to turn them upon tlieiripivots.

5. A partition for" a tube'grinding mill, comprising a 'Y spider including. spider segments, each'spider segment including a rim segment and a hub segment and radial arms lconnecting the same, means for connecting the arms ot the several spider segments, each hub segment having aV recess, a pivot element within the recess, each rim segment having Y acurved recess which is concentric 'with the pivot element', a segmental discharge plate secured to the side of the spider segmenti adjacent to the said recesses and having openings, a. segmental covervplate mounted within the recesses and connected With the pivot Y element and having openings to register with the first named openings, a rackA Carried by the outer portion of the cover plate, a pinion engaging said rack, and means operablefrom the exterior of the rim vsegment to turn .the-

pinion. Y

V(i. A partition Vfora tube grinding mill, comprising a spider including spider segments, each spider segment including a rim .segment and a hub segment and radial arms connecting the same,- means for connecting the arms of the several spider segments, each lnibsegment having a recess, a pivot element withinvthe recess, each rim segmi-ntshaving "a curved recess which is-'concentric With the Vpivot`element, and also having a radial opening a segmental discharge late Asecuredto they side of the spider segment adjacent to the d recesses and having openings, a segmental cover plate `mounted within the recesses and connected with the pivot element and having openings, a rack carried by the outer portion ot the cover late a )inion enga 'n0 the a l e is rack, a shaft secured to the piniony and ein`v tending through the radial opening to the ex-l teriorof the rimsegment so that it may be turned, and means to lock-the shaft against turning movement. i

7. In a compartment tube grinding mill,

a' casing, an adjustable partition therein, comprising a spider embodying separate con nected spider segments, separate segmental Vplates secured-to the corresponding spider segments andihaving openings formed therein, av corresponding! number of segmental cover plates having openings formed therein and arranged adjacent to the said segmental plates, meanslto :pivotally support' each segmental cover plate sot-hat it may turn in a Vplane substantially parallel with ythe face of its segmentalplate, and means to swing each segmental cover plate uponits pivot.

8.l AIn a compartment tube grinding mill, a casing, an vadjustable partition arranged therein, comprisinga spider embodying hol- :low "separate spider segments, ,a segmental plate secured to each spider segment and having openings ormedtherein, the several seg-V mental plates being separate, a co'verj plate Stor eachv segmentallplate arranged within each, hollow` spider'V segment and pivotally supported in a manner to swing 'parallel with the face of its segmental plate, the segmental i casing, an VVadjustable partition karranged therein, comprising a'hollow spider, cover rplate means secured to the spider adjacent to `one side thereotand having openings, apluf rality of separate segmental cover plates pivoted within the Vhollow spider` and having openings, formed therein and arranged adjacent to said plate means to swing in a plane parallel with the face of the plate means, separate means to turn each cover plate upon its pivot, and a plate secured to the hollow spider adjacentto its opposite side and havingan *opening formed thereinfor the passage of material,tlie two plates carried the spider serving to enclose the cover plates so that, they are free from contact With the grinding medium..

10. In a compartment tube grinding mill, a casing, an adjustable partition arranged therein, comprising discharge plate means having openings, cover plate means having openings and .arranged to co-actcvvith the disrcharge plate means, `inletplate means spaced tween theV dischargeplate means and inlet plate means.

11. `In a Vcompartment tube. grindingV mill, Y

a casing, an adjustable partition arranged therein, comprising ldischarge plate means having openings formed therein, inlet plate means spaced from the discharge plate means and having a generally central opening, cover `plate means arranged between the discharge j plate means to direct material to such opening, and lifting elements arranged between the discharge plate means and inlet plate means for raising the material and discharging the same upon the tapered guide element. n

n In testimony whereof I aiX my signature.

JOSEPH V. DURNIN. 

